Legacy-Free Keyboard/Embedded Controller with SPI and LPC Docking Interface
20.3
8051 Non-SFR Registers
Table 20.2 GPIO Direction Register A
N/A
HOST
ADDRESS
0x7F18
8051
ADDRESS
VCC1
0x00
POWER
DEFAULT
BIT
D7
D6
D5
D4
D3
D2
D1
D0
-
-
-
-
-
-
-
-
HOST TYPE
8051 TYPE
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
GPIO7
GPIO6
GPIO5
GPIO4
GPIO3
GPIO2
GPIO1
GPIO0
BIT NAME
1=output
0=input
1=output 1=output
1=output
0=input
1=output
0=input
1=output
0=input
1=output 1=output
0=input
0=input
0=input
0=input
Table 20.3 GPIO Output Register A
N/A
HOST ADDRESS
8051 ADDRESS
POWER
0x7F19
VCC1
0x00
DEFAULT
BIT
D7
D6
D5
D4
D3
D2
D1
D0
-
-
-
-
-
-
-
-
HOST TYPE
8051 TYPE
BIT NAME
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
GPIO7
GPIO6
GPIO5
GPIO4
GPIO3
GPIO2
GPIO1
GPIO0
Revision 1.1 (01-14-03)
220
SMSC LPC47N350
DATASHEET
SMSC [ SMSC CORPORATION ]
